I. adjective
also uro·pyg·e·al |yu̇rə|pijēəl
Etymology: uropygial International Scientific Vocabulary uropyg- (from New Latin uropygium ) + -ial; uropygeal irregular from New Latin uropygium + English -al
: of or relating to the uropygium
uropygial fat
II. noun
( -s )
: a uropygial feather : a tail feather